
<!DOCTYPE HTML>
<html lang="" >
    <head>
        <meta charset="UTF-8">
        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
        <title>Example: Todo List · GitBook</title>
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="description" content="">
        <meta name="generator" content="GitBook 3.2.2">
        
        
        
    
    <link rel="stylesheet" href="../gitbook/style.css">

    
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-highlight/website.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-search/search.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-fontsettings/website.css">
                
            
        

    

    
        
    
        
    
        
    
        
    
        
    
        
    

        
    
    
    <meta name="HandheldFriendly" content="true"/>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <link rel="apple-touch-icon-precomposed" sizes="152x152" href="../gitbook/images/apple-touch-icon-precomposed-152.png">
    <link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">

    
    <link rel="next" href="../advanced/" />
    
    
    <link rel="prev" href="UsageWithReact.html" />
    

    </head>
    <body>
        
<div class="book">
    <div class="book-summary">
        
            
<div id="book-search-input" role="search">
    <input type="text" placeholder="Type to search" />
</div>

            
                <nav role="navigation">
                


<ul class="summary">
    
    

    

    
        
        
    
        <li class="chapter " data-level="1.1" data-path="../">
            
                <a href="../">
            
                    
                    Read Me
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2" data-path="../introduction/">
            
                <a href="../introduction/">
            
                    
                    Introduction
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.2.1" data-path="../introduction/Motivation.html">
            
                <a href="../introduction/Motivation.html">
            
                    
                    Motivation
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.2" data-path="../introduction/CoreConcepts.html">
            
                <a href="../introduction/CoreConcepts.html">
            
                    
                    Core Concepts
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.3" data-path="../introduction/ThreePrinciples.html">
            
                <a href="../introduction/ThreePrinciples.html">
            
                    
                    Three Principles
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.4" data-path="../introduction/PriorArt.html">
            
                <a href="../introduction/PriorArt.html">
            
                    
                    Prior Art
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.5" data-path="../introduction/Ecosystem.html">
            
                <a href="../introduction/Ecosystem.html">
            
                    
                    Ecosystem
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.6" data-path="../introduction/Examples.html">
            
                <a href="../introduction/Examples.html">
            
                    
                    Examples
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.3" data-path="./">
            
                <a href="./">
            
                    
                    Basics
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.3.1" data-path="Actions.html">
            
                <a href="Actions.html">
            
                    
                    Actions
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.2" data-path="Reducers.html">
            
                <a href="Reducers.html">
            
                    
                    Reducers
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.3" data-path="Store.html">
            
                <a href="Store.html">
            
                    
                    Store
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.4" data-path="DataFlow.html">
            
                <a href="DataFlow.html">
            
                    
                    Data Flow
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.5" data-path="UsageWithReact.html">
            
                <a href="UsageWithReact.html">
            
                    
                    Usage with React
            
                </a>
            

            
        </li>
    
        <li class="chapter active" data-level="1.3.6" data-path="ExampleTodoList.html">
            
                <a href="ExampleTodoList.html">
            
                    
                    Example: Todo List
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4" data-path="../advanced/">
            
                <a href="../advanced/">
            
                    
                    Advanced
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.1" data-path="../advanced/AsyncActions.html">
            
                <a href="../advanced/AsyncActions.html">
            
                    
                    Async Actions
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.2" data-path="../advanced/AsyncFlow.html">
            
                <a href="../advanced/AsyncFlow.html">
            
                    
                    Async Flow
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.3" data-path="../advanced/Middleware.html">
            
                <a href="../advanced/Middleware.html">
            
                    
                    Middleware
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.4" data-path="../advanced/UsageWithReactRouter.html">
            
                <a href="../advanced/UsageWithReactRouter.html">
            
                    
                    Usage with React Router
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.5" data-path="../advanced/ExampleRedditAPI.html">
            
                <a href="../advanced/ExampleRedditAPI.html">
            
                    
                    Example: Reddit API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.6" >
            
                <span>
            
                    
                    Next Steps
            
                </span>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5" data-path="../recipes/">
            
                <a href="../recipes/">
            
                    
                    Recipes
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.1" data-path="../recipes/MigratingToRedux.html">
            
                <a href="../recipes/MigratingToRedux.html">
            
                    
                    Migrating to Redux
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2" data-path="../recipes/UsingObjectSpreadOperator.html">
            
                <a href="../recipes/UsingObjectSpreadOperator.html">
            
                    
                    Using Object Spread Operator
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.3" data-path="../recipes/ReducingBoilerplate.html">
            
                <a href="../recipes/ReducingBoilerplate.html">
            
                    
                    Reducing Boilerplate
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.4" data-path="../recipes/ServerRendering.html">
            
                <a href="../recipes/ServerRendering.html">
            
                    
                    Server Rendering
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.5" data-path="../recipes/WritingTests.html">
            
                <a href="../recipes/WritingTests.html">
            
                    
                    Writing Tests
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.6" data-path="../recipes/ComputingDerivedData.html">
            
                <a href="../recipes/ComputingDerivedData.html">
            
                    
                    Computing Derived Data
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.7" data-path="../recipes/ImplementingUndoHistory.html">
            
                <a href="../recipes/ImplementingUndoHistory.html">
            
                    
                    Implementing Undo History
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.8" data-path="../recipes/IsolatingSubapps.html">
            
                <a href="../recipes/IsolatingSubapps.html">
            
                    
                    Isolating Subapps
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9" data-path="../recipes/StructuringReducers.html">
            
                <a href="../recipes/StructuringReducers.html">
            
                    
                    Structuring Reducers
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.9.1" data-path="../recipes/reducers/PrerequisiteConcepts.html">
            
                <a href="../recipes/reducers/PrerequisiteConcepts.html">
            
                    
                    Prerequisite Concepts
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.2" data-path="../recipes/reducers/BasicReducerStructure.html">
            
                <a href="../recipes/reducers/BasicReducerStructure.html">
            
                    
                    Basic Reducer Structure
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.3" data-path="../recipes/reducers/SplittingReducerLogic.html">
            
                <a href="../recipes/reducers/SplittingReducerLogic.html">
            
                    
                    Splitting Reducer Logic
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.4" data-path="../recipes/reducers/RefactoringReducersExample.html">
            
                <a href="../recipes/reducers/RefactoringReducersExample.html">
            
                    
                    Refactoring Reducers Example
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.5" data-path="../recipes/reducers/UsingCombineReducers.html">
            
                <a href="../recipes/reducers/UsingCombineReducers.html">
            
                    
                    Using combineReducers
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.6" data-path="../recipes/reducers/BeyondCombineReducers.html">
            
                <a href="../recipes/reducers/BeyondCombineReducers.html">
            
                    
                    Beyond combineReducers
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.7" data-path="../recipes/reducers/NormalizingStateShape.html">
            
                <a href="../recipes/reducers/NormalizingStateShape.html">
            
                    
                    Normalizing State Shape
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.8" data-path="../recipes/reducers/UpdatingNormalizedData.html">
            
                <a href="../recipes/reducers/UpdatingNormalizedData.html">
            
                    
                    Updating Normalized Data
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.9" data-path="../recipes/reducers/ReusingReducerLogic.html">
            
                <a href="../recipes/reducers/ReusingReducerLogic.html">
            
                    
                    Reusing Reducer Logic
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.10" data-path="../recipes/reducers/ImmutableUpdatePatterns.html">
            
                <a href="../recipes/reducers/ImmutableUpdatePatterns.html">
            
                    
                    Immutable Update Patterns
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.9.11" data-path="../recipes/reducers/InitializingState.html">
            
                <a href="../recipes/reducers/InitializingState.html">
            
                    
                    Initializing State
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5.10" data-path="../recipes/UsingImmutableJS.html">
            
                <a href="../recipes/UsingImmutableJS.html">
            
                    
                    Using Immutable.JS with Redux
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.6" data-path="../FAQ.html">
            
                <a href="../FAQ.html">
            
                    
                    FAQ
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.6.1" data-path="../faq/General.html">
            
                <a href="../faq/General.html">
            
                    
                    General
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.2" data-path="../faq/Reducers.html">
            
                <a href="../faq/Reducers.html">
            
                    
                    Reducers
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.3" data-path="../faq/OrganizingState.html">
            
                <a href="../faq/OrganizingState.html">
            
                    
                    Organizing State
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.4" data-path="../faq/StoreSetup.html">
            
                <a href="../faq/StoreSetup.html">
            
                    
                    Store Setup
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.5" data-path="../faq/Actions.html">
            
                <a href="../faq/Actions.html">
            
                    
                    Actions
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.6" data-path="../faq/ImmutableData.html">
            
                <a href="../faq/ImmutableData.html">
            
                    
                    Immutable Data
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.7" data-path="../faq/CodeStructure.html">
            
                <a href="../faq/CodeStructure.html">
            
                    
                    Code Structure
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.8" data-path="../faq/Performance.html">
            
                <a href="../faq/Performance.html">
            
                    
                    Performance
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.9" data-path="../faq/ReactRedux.html">
            
                <a href="../faq/ReactRedux.html">
            
                    
                    React Redux
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.10" data-path="../faq/Miscellaneous.html">
            
                <a href="../faq/Miscellaneous.html">
            
                    
                    Miscellaneous
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.7" data-path="../Troubleshooting.html">
            
                <a href="../Troubleshooting.html">
            
                    
                    Troubleshooting
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8" data-path="../Glossary.html">
            
                <a href="../Glossary.html">
            
                    
                    Glossary
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9" data-path="../api/">
            
                <a href="../api/">
            
                    
                    API Reference
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.1" data-path="../api/createStore.html">
            
                <a href="../api/createStore.html">
            
                    
                    createStore
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.2" data-path="../api/Store.html">
            
                <a href="../api/Store.html">
            
                    
                    Store
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.3" data-path="../api/combineReducers.html">
            
                <a href="../api/combineReducers.html">
            
                    
                    combineReducers
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.4" data-path="../api/applyMiddleware.html">
            
                <a href="../api/applyMiddleware.html">
            
                    
                    applyMiddleware
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.5" data-path="../api/bindActionCreators.html">
            
                <a href="../api/bindActionCreators.html">
            
                    
                    bindActionCreators
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.6" data-path="../api/compose.html">
            
                <a href="../api/compose.html">
            
                    
                    compose
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.10" data-path="../CHANGELOG.md">
            
                <span>
            
                    
                    Change Log
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11" data-path="../PATRONS.md">
            
                <span>
            
                    
                    Patrons
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12" data-path="../Feedback.html">
            
                <a href="../Feedback.html">
            
                    
                    Feedback
            
                </a>
            

            
        </li>
    

    

    <li class="divider"></li>

    <li>
        <a href="https://www.gitbook.com" target="blank" class="gitbook-link">
            Published with GitBook
        </a>
    </li>
</ul>


                </nav>
            
        
    </div>

    <div class="book-body">
        
            <div class="body-inner">
                
                    

<div class="book-header" role="navigation">
    

    <!-- Title -->
    <h1>
        <i class="fa fa-circle-o-notch fa-spin"></i>
        <a href=".." >Example: Todo List</a>
    </h1>
</div>




                    <div class="page-wrapper" tabindex="-1" role="main">
                        <div class="page-inner">
                            
<div id="book-search-results">
    <div class="search-noresults">
    
                                <section class="normal markdown-section">
                                
                                <h1 id="example-todo-list">Example: Todo List</h1>
<p>This is the complete source code of the tiny todo app we built during the <a href="./">basics tutorial</a>.</p>
<h2 id="entry-point">Entry Point</h2>
<h4 id="indexjs"><code>index.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>
<span class="hljs-keyword">import</span> { render } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react-dom&apos;</span>
<span class="hljs-keyword">import</span> { Provider } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react-redux&apos;</span>
<span class="hljs-keyword">import</span> { createStore } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;redux&apos;</span>
<span class="hljs-keyword">import</span> todoApp <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./reducers&apos;</span>
<span class="hljs-keyword">import</span> App <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./components/App&apos;</span>

<span class="hljs-keyword">let</span> store = createStore(todoApp)

render(
  <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">Provider</span> <span class="hljs-attr">store</span>=<span class="hljs-string">{store}</span>&gt;</span>
    <span class="hljs-tag">&lt;<span class="hljs-name">App</span> /&gt;</span>
  <span class="hljs-tag">&lt;/<span class="hljs-name">Provider</span>&gt;</span>,
  document.getElementById(&apos;root&apos;)
)
</span></code></pre>
<h2 id="action-creators">Action Creators</h2>
<h4 id="actionsindexjs"><code>actions/index.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">let</span> nextTodoId = <span class="hljs-number">0</span>
<span class="hljs-keyword">export</span> <span class="hljs-keyword">const</span> addTodo = (text) =&gt; {
  <span class="hljs-keyword">return</span> {
    type: <span class="hljs-string">&apos;ADD_TODO&apos;</span>,
    id: nextTodoId++,
    text
  }
}

<span class="hljs-keyword">export</span> <span class="hljs-keyword">const</span> setVisibilityFilter = (filter) =&gt; {
  <span class="hljs-keyword">return</span> {
    type: <span class="hljs-string">&apos;SET_VISIBILITY_FILTER&apos;</span>,
    filter
  }
}

<span class="hljs-keyword">export</span> <span class="hljs-keyword">const</span> toggleTodo = (id) =&gt; {
  <span class="hljs-keyword">return</span> {
    type: <span class="hljs-string">&apos;TOGGLE_TODO&apos;</span>,
    id
  }
}
</code></pre>
<h2 id="reducers">Reducers</h2>
<h4 id="reducerstodosjs"><code>reducers/todos.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> todo = (state = {}, action) =&gt; {
  <span class="hljs-keyword">switch</span> (action.type) {
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;ADD_TODO&apos;</span>:
      <span class="hljs-keyword">return</span> {
        id: action.id,
        text: action.text,
        completed: <span class="hljs-literal">false</span>
      }
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;TOGGLE_TODO&apos;</span>:
      <span class="hljs-keyword">if</span> (state.id !== action.id) {
        <span class="hljs-keyword">return</span> state
      }

      <span class="hljs-keyword">return</span> <span class="hljs-built_in">Object</span>.assign({}, state, {
        completed: !state.completed
      })

    <span class="hljs-keyword">default</span>:
      <span class="hljs-keyword">return</span> state
  }
}

<span class="hljs-keyword">const</span> todos = (state = [], action) =&gt; {
  <span class="hljs-keyword">switch</span> (action.type) {
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;ADD_TODO&apos;</span>:
      <span class="hljs-keyword">return</span> [
        ...state,
        todo(<span class="hljs-literal">undefined</span>, action)
      ]
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;TOGGLE_TODO&apos;</span>:
      <span class="hljs-keyword">return</span> state.map(t =&gt;
        todo(t, action)
      )
    <span class="hljs-keyword">default</span>:
      <span class="hljs-keyword">return</span> state
  }
}

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> todos
</code></pre>
<h4 id="reducersvisibilityfilterjs"><code>reducers/visibilityFilter.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> visibilityFilter = (state = <span class="hljs-string">&apos;SHOW_ALL&apos;</span>, action) =&gt; {
  <span class="hljs-keyword">switch</span> (action.type) {
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;SET_VISIBILITY_FILTER&apos;</span>:
      <span class="hljs-keyword">return</span> action.filter
    <span class="hljs-keyword">default</span>:
      <span class="hljs-keyword">return</span> state
  }
}

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> visibilityFilter
</code></pre>
<h4 id="reducersindexjs"><code>reducers/index.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> { combineReducers } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;redux&apos;</span>
<span class="hljs-keyword">import</span> todos <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./todos&apos;</span>
<span class="hljs-keyword">import</span> visibilityFilter <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./visibilityFilter&apos;</span>

<span class="hljs-keyword">const</span> todoApp = combineReducers({
  todos,
  visibilityFilter
})

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> todoApp
</code></pre>
<h2 id="presentational-components">Presentational Components</h2>
<h4 id="componentstodojs"><code>components/Todo.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React, { PropTypes } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>

<span class="hljs-keyword">const</span> Todo = ({ onClick, completed, text }) =&gt; (
  <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">li</span>
    <span class="hljs-attr">onClick</span>=<span class="hljs-string">{onClick}</span>
    <span class="hljs-attr">style</span>=<span class="hljs-string">{{textDecoration:</span> <span class="hljs-attr">completed</span> ? &apos;<span class="hljs-attr">line-through</span>&apos; <span class="hljs-attr">:</span> &apos;<span class="hljs-attr">none</span>&apos;}}
  &gt;</span>
    {text}
  <span class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></span>
)

Todo.propTypes = {
  onClick: PropTypes.func.isRequired,
  completed: PropTypes.bool.isRequired,
  text: PropTypes.string.isRequired
}

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> Todo
</code></pre>
<h4 id="componentstodolistjs"><code>components/TodoList.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React, { PropTypes } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>
<span class="hljs-keyword">import</span> Todo <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./Todo&apos;</span>

<span class="hljs-keyword">const</span> TodoList = ({ todos, onTodoClick }) =&gt; (
  <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">ul</span>&gt;</span>
    {todos.map(todo =&gt;
      <span class="hljs-tag">&lt;<span class="hljs-name">Todo</span>
        <span class="hljs-attr">key</span>=<span class="hljs-string">{todo.id}</span>
        {<span class="hljs-attr">...todo</span>}
        <span class="hljs-attr">onClick</span>=<span class="hljs-string">{()</span> =&gt;</span> onTodoClick(todo.id)}
      /&gt;
    )}
  <span class="hljs-tag">&lt;/<span class="hljs-name">ul</span>&gt;</span>
)

TodoList.propTypes = {
  todos: PropTypes.arrayOf(PropTypes.shape({
    id: PropTypes.number.isRequired,
    completed: PropTypes.bool.isRequired,
    text: PropTypes.string.isRequired
  }).isRequired).isRequired,
  onTodoClick: PropTypes.func.isRequired
}

export default TodoList
</span></code></pre>
<h4 id="componentslinkjs"><code>components/Link.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React, { PropTypes } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>

<span class="hljs-keyword">const</span> Link = ({ active, children, onClick }) =&gt; {
  <span class="hljs-keyword">if</span> (active) {
    <span class="hljs-keyword">return</span> <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">span</span>&gt;</span>{children}<span class="hljs-tag">&lt;/<span class="hljs-name">span</span>&gt;</span></span>
  }

  <span class="hljs-keyword">return</span> (
    <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">a</span> <span class="hljs-attr">href</span>=<span class="hljs-string">&quot;#&quot;</span>
       <span class="hljs-attr">onClick</span>=<span class="hljs-string">{e</span> =&gt;</span> {
         e.preventDefault()
         onClick()
       }}
    &gt;
      {children}
    <span class="hljs-tag">&lt;/<span class="hljs-name">a</span>&gt;</span></span>
  )
}

Link.propTypes = {
  active: PropTypes.bool.isRequired,
  children: PropTypes.node.isRequired,
  onClick: PropTypes.func.isRequired
}

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> Link
</code></pre>
<h4 id="componentsfooterjs"><code>components/Footer.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>
<span class="hljs-keyword">import</span> FilterLink <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../containers/FilterLink&apos;</span>

<span class="hljs-keyword">const</span> Footer = () =&gt; (
  <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">p</span>&gt;</span>
    Show:
    {&quot; &quot;}
    <span class="hljs-tag">&lt;<span class="hljs-name">FilterLink</span> <span class="hljs-attr">filter</span>=<span class="hljs-string">&quot;SHOW_ALL&quot;</span>&gt;</span>
      All
    <span class="hljs-tag">&lt;/<span class="hljs-name">FilterLink</span>&gt;</span>
    {&quot;, &quot;}
    <span class="hljs-tag">&lt;<span class="hljs-name">FilterLink</span> <span class="hljs-attr">filter</span>=<span class="hljs-string">&quot;SHOW_ACTIVE&quot;</span>&gt;</span>
      Active
    <span class="hljs-tag">&lt;/<span class="hljs-name">FilterLink</span>&gt;</span>
    {&quot;, &quot;}
    <span class="hljs-tag">&lt;<span class="hljs-name">FilterLink</span> <span class="hljs-attr">filter</span>=<span class="hljs-string">&quot;SHOW_COMPLETED&quot;</span>&gt;</span>
      Completed
    <span class="hljs-tag">&lt;/<span class="hljs-name">FilterLink</span>&gt;</span>
  <span class="hljs-tag">&lt;/<span class="hljs-name">p</span>&gt;</span></span>
)

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> Footer
</code></pre>
<h4 id="componentsappjs"><code>components/App.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>
<span class="hljs-keyword">import</span> Footer <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./Footer&apos;</span>
<span class="hljs-keyword">import</span> AddTodo <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../containers/AddTodo&apos;</span>
<span class="hljs-keyword">import</span> VisibleTodoList <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../containers/VisibleTodoList&apos;</span>

<span class="hljs-keyword">const</span> App = () =&gt; (
  &lt;div&gt;
    &lt;AddTodo /&gt;
    &lt;VisibleTodoList /&gt;
    &lt;Footer /&gt;
  &lt;/div&gt;
)

export default App
</code></pre>
<h2 id="container-components">Container Components</h2>
<h4 id="containersvisibletodolistjs"><code>containers/VisibleTodoList.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> { connect } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react-redux&apos;</span>
<span class="hljs-keyword">import</span> { toggleTodo } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../actions&apos;</span>
<span class="hljs-keyword">import</span> TodoList <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../components/TodoList&apos;</span>

<span class="hljs-keyword">const</span> getVisibleTodos = (todos, filter) =&gt; {
  <span class="hljs-keyword">switch</span> (filter) {
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;SHOW_ALL&apos;</span>:
      <span class="hljs-keyword">return</span> todos
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;SHOW_COMPLETED&apos;</span>:
      <span class="hljs-keyword">return</span> todos.filter(t =&gt; t.completed)
    <span class="hljs-keyword">case</span> <span class="hljs-string">&apos;SHOW_ACTIVE&apos;</span>:
      <span class="hljs-keyword">return</span> todos.filter(t =&gt; !t.completed)
  }
}

<span class="hljs-keyword">const</span> mapStateToProps = (state) =&gt; {
  <span class="hljs-keyword">return</span> {
    todos: getVisibleTodos(state.todos, state.visibilityFilter)
  }
}

<span class="hljs-keyword">const</span> mapDispatchToProps = (dispatch) =&gt; {
  <span class="hljs-keyword">return</span> {
    onTodoClick: (id) =&gt; {
      dispatch(toggleTodo(id))
    }
  }
}

<span class="hljs-keyword">const</span> VisibleTodoList = connect(
  mapStateToProps,
  mapDispatchToProps
)(TodoList)

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> VisibleTodoList
</code></pre>
<h4 id="containersfilterlinkjs"><code>containers/FilterLink.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> { connect } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react-redux&apos;</span>
<span class="hljs-keyword">import</span> { setVisibilityFilter } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../actions&apos;</span>
<span class="hljs-keyword">import</span> Link <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../components/Link&apos;</span>

<span class="hljs-keyword">const</span> mapStateToProps = (state, ownProps) =&gt; {
  <span class="hljs-keyword">return</span> {
    active: ownProps.filter === state.visibilityFilter
  }
}

<span class="hljs-keyword">const</span> mapDispatchToProps = (dispatch, ownProps) =&gt; {
  <span class="hljs-keyword">return</span> {
    onClick: () =&gt; {
      dispatch(setVisibilityFilter(ownProps.filter))
    }
  }
}

<span class="hljs-keyword">const</span> FilterLink = connect(
  mapStateToProps,
  mapDispatchToProps
)(Link)

<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> FilterLink
</code></pre>
<h3 id="other-components">Other Components</h3>
<h4 id="containersaddtodojs"><code>containers/AddTodo.js</code></h4>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>
<span class="hljs-keyword">import</span> { connect } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react-redux&apos;</span>
<span class="hljs-keyword">import</span> { addTodo } <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;../actions&apos;</span>

<span class="hljs-keyword">let</span> AddTodo = ({ dispatch }) =&gt; {
  <span class="hljs-keyword">let</span> input

  <span class="hljs-keyword">return</span> (
    <span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">div</span>&gt;</span>
      <span class="hljs-tag">&lt;<span class="hljs-name">form</span> <span class="hljs-attr">onSubmit</span>=<span class="hljs-string">{e</span> =&gt;</span> {
        e.preventDefault()
        if (!input.value.trim()) {
          return
        }
        dispatch(addTodo(input.value))
        input.value = &apos;&apos;
      }}&gt;
        <span class="hljs-tag">&lt;<span class="hljs-name">input</span> <span class="hljs-attr">ref</span>=<span class="hljs-string">{node</span> =&gt;</span> {
          input = node
        }} /&gt;
        <span class="hljs-tag">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">type</span>=<span class="hljs-string">&quot;submit&quot;</span>&gt;</span>
          Add Todo
        <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span>
      <span class="hljs-tag">&lt;/<span class="hljs-name">form</span>&gt;</span>
    <span class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span>
  )
}
AddTodo = connect()(AddTodo)

export default AddTodo
</span></code></pre>

                                
                                </section>
                            
    </div>
    <div class="search-results">
        <div class="has-results">
            
            <h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1>
            <ul class="search-results-list"></ul>
            
        </div>
        <div class="no-results">
            
            <h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1>
            
        </div>
    </div>
</div>

                        </div>
                    </div>
                
            </div>

            
                
                <a href="UsageWithReact.html" class="navigation navigation-prev " aria-label="Previous page: Usage with React">
                    <i class="fa fa-angle-left"></i>
                </a>
                
                
                <a href="../advanced/" class="navigation navigation-next " aria-label="Next page: Advanced">
                    <i class="fa fa-angle-right"></i>
                </a>
                
            
        
    </div>

    <script>
        var gitbook = gitbook || [];
        gitbook.push(function() {
            gitbook.page.hasChanged({"page":{"title":"Example: Todo List","level":"1.3.6","depth":2,"next":{"title":"Advanced","level":"1.4","depth":1,"path":"advanced/README.md","ref":"./advanced/README.md","articles":[{"title":"Async Actions","level":"1.4.1","depth":2,"path":"advanced/AsyncActions.md","ref":"./advanced/AsyncActions.md","articles":[]},{"title":"Async Flow","level":"1.4.2","depth":2,"path":"advanced/AsyncFlow.md","ref":"./advanced/AsyncFlow.md","articles":[]},{"title":"Middleware","level":"1.4.3","depth":2,"path":"advanced/Middleware.md","ref":"./advanced/Middleware.md","articles":[]},{"title":"Usage with React Router","level":"1.4.4","depth":2,"path":"advanced/UsageWithReactRouter.md","ref":"./advanced/UsageWithReactRouter.md","articles":[]},{"title":"Example: Reddit API","level":"1.4.5","depth":2,"path":"advanced/ExampleRedditAPI.md","ref":"./advanced/ExampleRedditAPI.md","articles":[]},{"title":"Next Steps","level":"1.4.6","depth":2,"ref":"","articles":[]}]},"previous":{"title":"Usage with React","level":"1.3.5","depth":2,"path":"basics/UsageWithReact.md","ref":"./basics/UsageWithReact.md","articles":[]},"dir":"ltr"},"config":{"gitbook":"*","theme":"default","variables":{},"plugins":["livereload"],"pluginsConfig":{"livereload":{},"highlight":{},"search":{},"lunr":{"maxIndexSize":1000000,"ignoreSpecialCharacters":false},"sharing":{"facebook":true,"twitter":true,"google":false,"weibo":false,"instapaper":false,"vk":false,"all":["facebook","google","twitter","weibo","instapaper"]},"fontsettings":{"theme":"white","family":"sans","size":2},"theme-default":{"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"showLevel":false}},"structure":{"langs":"LANGS.md","readme":"README.md","glossary":"GLOSSARY.md","summary":"SUMMARY.md"},"pdf":{"pageNumbers":true,"fontSize":12,"fontFamily":"Arial","paperSize":"a4","chapterMark":"pagebreak","pageBreaksBefore":"/","margin":{"right":62,"left":62,"top":56,"bottom":56}},"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"}},"file":{"path":"basics/ExampleTodoList.md","mtime":"2017-03-15T14:46:08.270Z","type":"markdown"},"gitbook":{"version":"3.2.2","time":"2017-03-15T14:47:19.389Z"},"basePath":"..","book":{"language":""}});
        });
    </script>
</div>

        
    <script src="../gitbook/gitbook.js"></script>
    <script src="../gitbook/theme.js"></script>
    
        
        <script src="../gitbook/gitbook-plugin-livereload/plugin.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-search/search-engine.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-search/search.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-lunr/lunr.min.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-lunr/search-lunr.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-sharing/buttons.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script>
        
    

    </body>
</html>

